Artificial lift system and an associated method thereof

Abstract

An artificial lift system and a method of operating and installing such an artificial lift system are disclosed. The artificial lift system includes a reciprocating driver and a reciprocating pump. Further, the reciprocating driver includes a driver-shaft and the reciprocating pump includes a pump-shaft detachably engaged to the driver-shaft. In one embodiment, the artificial lift system further includes a coupling member, where the pump-shaft is detachably engaged to the driver-shaft through the coupling member.

1 . An artificial lift system comprising:
 a reciprocating driver comprising a driver-shaft; and   a reciprocating pump comprising a pump-shaft detachably engaged to the driver-shaft.   
     
     
         2 . The artificial lift system of  claim 1 , further comprising a coupling member, wherein the pump-shaft is detachably engaged to the driver-shaft via the coupling member. 
     
     
         3 . The artificial lift system of  claim 2 , wherein one among the driver-shaft and the pump-shaft comprises a notch and wherein the coupling member comprises a first end coupled to other among the driver-shaft and the pump-shaft. 
     
     
         4 . The artificial lift system of  claim 3 , wherein the coupling member further comprises a second end and a plurality of tines extending from the second end up to a predefined distance towards the first end, wherein the plurality of tines is detachably engaged to the notch. 
     
     
         5 . The artificial lift system of  claim 2 , wherein the coupling member comprises a connecting member comprising a slot and a harpoon anchor detachably engaged to the slot, wherein the harpoon anchor is coupled to one among the driver-shaft and the pump-shaft and the connecting member is coupled to other among the pump-shaft and the driver-shaft. 
     
     
         6 . The artificial lift system of  claim 2 , wherein the coupling member comprises a connecting member comprising a slot and a shear pin detachably engaged to the slot, wherein the shear pin is coupled to one among the driver-shaft and the pump-shaft and the connecting member is coupled to other among the pump-shaft and the driver-shaft. 
     
     
         7 . The artificial lift system of  claim 2 , wherein the coupling member comprises a fishing-neck-like member and an overshot member detachably engaged to the fishing-neck-like member, wherein the fishing-neck-like member is coupled to one among the driver-shaft and the pump-shaft and the overshot member is coupled to other among the pump-shaft and the driver-shaft. 
     
     
         8 . The artificial lift system of  claim 2 , wherein the coupling member comprises a first connecting member comprising a slot and a spring collet comprising a shoulder portion detachably engaged to the slot, wherein the spring collet is coupled to one among the driver-shaft and the pump-shaft and the first connecting member is coupled to other among the pump-shaft and the driver-shaft. 
     
     
         9 . The artificial lift system of  claim 8 , wherein the shoulder portion is disposed substantially perpendicular to a central axis of the pump-shaft. 
     
     
         10 . The artificial lift system of  claim 8 , wherein the shoulder portion is disposed at a pre-determined tilt angle relative to a central axis of the pump-shaft. 
     
     
         11 . The artificial lift system of  claim 8 , wherein the coupling member further comprises a second connecting member, wherein the spring collet is coupled to the one among the pump-shaft and the driver-shaft via the second connecting member, wherein the second connecting member comprises a first end coupled to the spring collet and a second end comprising a slot. 
     
     
         12 . A method comprising:
 installing a reciprocating driver comprising a driver-shaft in a well bore;   installing a reciprocating pump comprising a pump-shaft in the well bore; and   applying a first force to the reciprocating pump, to detachably engage the pump-shaft to the driver-shaft.   
     
     
         13 . The method of  claim 12 , further comprising applying a second force to the reciprocating pump, to disengage the pump-shaft from the driver-shaft. 
     
     
         14 . The method of  claim 13 , wherein the pump-shaft is detachably engaged to the driver-shaft via a coupling member. 
     
     
         15 . The method of  claim 13 , wherein the second force comprises at least one of a linear force and a rotation force applied using at least one of a hydraulic pressure device, a pneumatic pressure device, a wire line device, a coiled tubing, and a plurality of sucker rods. 
     
     
         16 . The method of  claim 12 , wherein the first force comprises at least one of a linear force and a rotation force applied using at least one of a hydraulic pressure device, a pneumatic pressure device, a wire line device, a coiled tubing, and a plurality of sucker rods. 
     
     
         17 . A method comprising:
 powering a reciprocating driver disposed in a well bore, wherein the reciprocating driver comprises a driver-shaft;   driving a reciprocating pump disposed in the well bore via the reciprocating driver, wherein the reciprocating pump comprises a pump-shaft detachably engaged to the driver-shaft; and   pumping a production fluid from the well bore to a surface unit via a tubing, by driving the reciprocating pump.   
     
     
         18 . The method of  claim 17 , wherein the pump-shaft is detachably engaged to the driver-shaft via a coupling member. 
     
     
         19 . The method of  claim 18 , wherein driving the reciprocating pump comprises transmitting a compressive force directly from the driver-shaft to the pump-shaft. 
     
     
         20 . The method of  claim 18 , wherein driving the reciprocating pump comprises transmitting a tensile force from the pump-shaft to the driver-shaft via the coupling member.